Table 3.
The performance of BALF based detection for the diagnosis of pulmonary TB in sputum-negative suspects and those without sputum
| Positive detectable rate % | Sensitivity % | Specificity % | Accuracy % | |
|---|---|---|---|---|
| Sputum-negative | ||||
| BALF-smear/culture/NAAT | 19.7 | 35.6 | 100.0 | 64.4 |
| BALF-culture | 16.5 | 29.7 | 100.0 | 61.1 |
| BALF-NAAT | 11.1 | 20.1 | 100.0 | 55.8 |
| No sputum | ||||
| BALF-smear/culture/NAAT | 40.0 | 53.6 | 100.0 | 65.4 |
| BALF-culture | 38.2 | 51.3 | 100.0 | 63.7 |
| BALF-NAAT | 24.5 | 32.9 | 100.0 | 50.0 |
| sputum negative and no sputum | ||||
| BALF-smear/culture/NAAT | 27.8 | 44.1 | 100.0 | 64.9 |
| BALF-culture | 26.3 | 41.6 | 100.0 | 63.3 |
| BALF-NAAT | 16.5 | 26.3 | 100.0 | 53.7 |
TB tuberculosis, BALF bronchoalveolar lavage fluid, NAAT nucleic acid amplification test